TYPESCRIPT

TypeScript is a free and open-source programming language developed and maintained by Microsoft. It is a strict syntactical superset of JavaScript, and adds optional static typing to the language. Anders Hejlsberg, lead architect of C# and creator of Delphi and Turbo Pascal, has worked on the development of TypeScript.[3][4][5][6] TypeScript may be used to develop JavaScript applications for client-side or server-side (Node.js) execution.